| Rondin Bridge Limited | Hospitality | 2018 |
| Ronos Ltd | Construction | 2019 |
| Roofmart (Contracting) MK Ltd | Construction | 2006 |
| Rooms and More Ltd | Real estate | 2019 |
| Root and Fibre Ltd | Wholesale & retail | 2026 |
| Rorvik Management Ltd | Construction | 2025 |
| Rosa Cooper RTM Company Limited | Households | 2025 |
| Rose Cottage Datchworth Limited | Extraterritorial | 2017 |
| Rose Price Limited | Administrative & support | 2022 |
| Rosebert Properties Limited | Real estate | 2007 |
| Rosebox (18) Limited | Financial services | 2018 |
| Rosedale Flats RTM Company Ltd | Households | 2021 |
| Rosenfield Property Ltd | Real estate | 2026 |
| Rosethorne Construction Limited | Construction | 2011 |
| Rosewood Garden Services Ltd | Administrative & support | 2023 |
| Ross James Kilpatrick Limited | Construction | 2015 |
| Rossington Curry Limited | Hospitality | 2022 |
| Rough and Ready Creates Ltd | Manufacturing | 2023 |
| Rowen Logistics Ltd | Transport & logistics | 2025 |
| Rowing Centre UK Limited | Wholesale & retail | 2002 |
| Rowledge Court Management Company Limited | Households | 2012 |
| Roxleya Ltd | Transport & logistics | 2023 |
| Royal Flush Drainage Ltd | Construction | 2020 |
| Royes House Ltd | Hospitality | 2022 |
| RP Building Maintenance Ltd | Construction | 2023 |
| RPG Consultants Ltd | Professional & scientific | 2010 |
| RPS Financial Services Limited | Professional & scientific | 2018 |
| RPS Ventures Ltd | Real estate | 2016 |
| Rpsd MAL Limited | Real estate | 2023 |
| Rrar LLP | | 2019 |
| Rrema Enterprises Limited | Real estate | 2021 |
| RS Contractors (UK) Ltd | Construction | 2011 |
| RS Humans Ltd | Transport & logistics | 2022 |
| RS Luxury Travel Limited | Other services | 2017 |
| Rsics Ltd | Construction | 2023 |
| RST Engineering Limited | Manufacturing | 2002 |
| RT Talent Solutions Limited | Administrative & support | 2025 |
| RT Two Holdings Limited | Financial services | 2026 |
| Rubber Duck Digital Ltd | Information & communication | 2014 |
| Rubo Ltd | Transport & logistics | 2019 |
| Ruby DOO Limited | Information & communication | 2013 |
| Ruby Fire and Electrical Ltd | Construction | 2021 |
| Ruby Indian Ltd | Hospitality | 2025 |
| Rudolf Recovery & Car Transportation Ltd | Wholesale & retail | 2024 |
| Rudra Foods Limited | Hospitality | 2021 |
| Rule 303 Ltd | Information & communication | 2013 |
| Rule Number 10 Limited | Wholesale & retail | 2017 |
| Rumi Properties Ltd | Real estate | 2018 |
| Rundezvous Ltd | Information & communication | 2023 |
| Runlong Limited | Information & communication | 2015 |
| Rural Roasts Ltd | Hospitality | 2019 |
| Ruskin Way Limited | Hospitality | 2025 |
| Russell Belgrave Ltd | Arts & recreation | 2014 |
| Russell K Limited | Manufacturing | 2008 |
| Russell Stuart Limited | Manufacturing | 2003 |
| Russet Properties Limited | Real estate | 2017 |
| Russmann Commercial Limited | Professional & scientific | 2024 |
| Russwell Residential Ltd | Real estate | 2025 |
| Rusty Bike Mile END Limited | Hospitality | 2024 |
| Rusty Inc Ltd | Information & communication | 2021 |
| Rutaba Limited | Real estate | 2023 |
| Rutaba Petroleum Limited | Wholesale & retail | 2025 |
| Rutatata Private Limited | Other services | 2012 |
| Rutland Country Properties Limited | Real estate | 2019 |
| Ruvee Uniforms Ltd | Wholesale & retail | 2025 |
| Ruxler Ltd | Construction | 2019 |
| Ruzaro Ltd | Hospitality | 2026 |
| RVM Fashion Ltd | Wholesale & retail | 2023 |
| Ryan Doherty Limited | Construction | 2017 |
| Ryan Stanley Homes Ltd | Real estate | 2024 |
| Rydan Commercial Developments Limited | Extraterritorial | 2015 |
| Ryders by Properties Ltd | Real estate | 2018 |
| RYE Nurseries Management Company Limited | Construction | 2020 |
| Rysvil Care Services Limited | Health & social care | 2008 |
| S & C Elite Properties Ltd | Construction | 2023 |
| S & J Home Improvements Limited | Construction | 2007 |
| S & R Decor (South East) Limited | Construction | 2025 |
| S & R Decor Limited | Construction | 2008 |
| S C Ayres Developments Ltd | Construction | 2026 |
| S D C Consulting Limited | Professional & scientific | 2026 |
| S Fruits Ltd | Wholesale & retail | 2018 |
| S Howard Photography Limited | Professional & scientific | 2014 |
| S&A Building Services Group Ltd | Construction | 2025 |
| S&D Security Jobs & Services Ltd | Administrative & support | 2025 |
| S&Ghaven Ltd | Real estate | 2025 |
| S&M Services Ltd | Transport & logistics | 2025 |
| S&S Roberts Limited | Real estate | 2014 |
| S&T Flooring Construction Ltd | Construction | 2024 |
| S. Knight Consultancy Ltd | Professional & scientific | 2017 |
| S.A.D.E. Limited | Construction | 2016 |
| S.M Engineering and Construction Limited | Construction | 2025 |
| S50 Precision Engineering Limited | Manufacturing | 2024 |
| S7 Transport Limited | Transport & logistics | 2022 |
| SA Chauffeuring Cars Ltd | Transport & logistics | 2024 |
| SA Consortium Limited | Real estate | 2016 |
| SA Solutions for YOU Ltd | Construction | 2023 |
| SAA Holdings Limited | Real estate | 2020 |
| Saag Business Solutions Limited | Administrative & support | 2004 |
| Saap Investments Limited | Administrative & support | 2017 |
| SAB Holdings Limited | Real estate | 2020 |